Donnchad mac Eochaid

Donnchad mac Eochaid (1053-), also known as Donough McHaughey, was the Chancellor of Ulster from 6 July 1079, succeeding Donnchad mac Flaithbertach. The brother of Dun Sleibe mac Eochaid, Donnchad had high diplomatic skills, leading to King Einri of Eire making him chancellor.